My DVD x4 speed wont read DVD ive burned on 16x

[llanito]

Ive recently bought a new computer with a Sony 16 x dual layer dvd rewritable +R/ -R/RW. Ive used +R disc and alo0 -R discs to rewrite Data files which I can read on this computer.
When I take the discs to my old computer which is a x4 it wont read them at all
Can anyone help with this problem
Thanks
Louis

 

[vegasgmc]

The old drive may need a firmware upgrade. Check the manufacturer site.